CN106855062A - A kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan - Google Patents
A kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan Download PDFInfo
- Publication number
- CN106855062A CN106855062A CN201611162289.2A CN201611162289A CN106855062A CN 106855062 A CN106855062 A CN 106855062A CN 201611162289 A CN201611162289 A CN 201611162289A CN 106855062 A CN106855062 A CN 106855062A
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- China
- Prior art keywords
- snail tongue
- noise reduction
- varying depth
- tougue
- depth noise
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/422—Discharge tongues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of varying depth noise reduction spiral tougue, including body (1), the intersection that wherein described body (1) is crossed to form for spiral case curved surface and diffuser contour surface, the intersection is the symmetrical curve formed on spiral case (4), the symmetrical curve sequentially consists of snail tongue section (1 2) windward, snail tongue interlude (1 3), snail tongue time rear (1 4) and snail tongue rear (1 5), snail tongue section (1 2) windward, snail tongue interlude (1 3), snail tongue time rear (1 4) and snail tongue rear (1 5) are to become radius rounding corner structure respectively along intersection, form the elementary contour face of snail tongue.Abandoning tradition rectilinear wire snail tongue structure design of the present invention, along snail tongue wire direction, snail tongue depth changes, snail tongue profile rounding radii simultaneously changes along snail tongue wire direction, good noise reduction can be reached, and be conducive to the lifting of aerodynamic performance, reduce use cost.
Description
Technical field
The invention belongs to centrifugal blower technical field, more particularly to a kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan.
Background technology
Multi-wing centrifugal fan be current household electrical appliances, automobile, environmental protecting device, compact low noise use environment requirement one kind give
Pressure device.Although there is many manufacturing enterprises, low noise, big flow, the design of high-efficiency compact blower fan for use requirement high
Production technology, in still resting in monopoly enterprise of a small number of foreign countries hands.The factors such as aerodynamic noise, construct noise during due to blower fan work
Influence, in some use occasions, to the performance requirement more and more higher of blower fan, therefore, about the research of multi-wing centrifugal fan
It is current study hotspot problem.
The snail tongue of multi-wing centrifugal fan is a part for key in centrifugal blower, and the design of snail tongue directly affects blower fan
The performances such as efficiency, aerodynamic noise, therefore, the snail tongue design of multi-wing centrifugal fan is also a key issue in fan design.
At present, it is main for the design of blower fan snail tongue according to conventional design experiences or test data, pay close attention to snail tongue and impeller goes out
The radius size empirical value of the distance between mouth empirical value and snail tongue, is essentially all in the design using the method pair of empirical value
Snail tongue is designed.These methods, although the demand of most blower fan applications, but setting in high-performance blower fan are met in engineering
On meter, limitation is but there are, the performance parameter request to high performance blower fan affects.Therefore, explore many
The snail tongue design and manufacture method of wing centrifugal blower design, improve complete blower performance, and the design for high-performance blower fan has
Important engineering use value.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan, by right
The snail tongue of multi-wing centrifugal fan carries out innovative design, to improve the comprehensive performance parameter such as blast, component, efficiency of blower fan, reaches
To the environmentally friendly purpose of design of efficient, low noise.
The technical solution adopted for the present invention to solve the technical problems is：A kind of varying depth noise reduction spiral tougue, including this are provided
Body, wherein the body is the intersection that spiral case curved surface is crossed to form with diffuser contour surface, the intersection is in spiral case
One symmetrical curve of upper formation, the symmetrical curve sequentially consists of snail tongue section, snail tongue interlude, snail tongue time rear windward
With snail tongue rear, section, snail tongue interlude, snail tongue time rear and snail tongue rear are to become half respectively along intersection to the snail tongue windward
Footpath rounding corner structure, the elementary contour face for forming snail tongue.
Further technical characteristic of the invention is that the intersection can be that non-circular profile structure or kingfisher head contour are bionical
Structure.
Further technical characteristic of the invention is, the rounding radii excursion of snail tongue section windward is 6-4mm.
Further technical characteristic of the invention is that the rounding radii excursion of the snail tongue interlude is 5-3mm.
Further technical characteristic of the invention is that the rounding radii excursion of the snail tongue time rear is 4-2mm.
Further technical characteristic of the invention is that the snail tongue rear rounding radii excursion is 3-0mm.
A kind of multi-wing centrifugal fan using described varying depth noise reduction spiral tougue, including body, diffuser, impeller and snail
Shell, it is characterised in that：The body is arranged on the snail tongue support zone of spiral case, and the impeller is arranged on bionical snail by support
On shell, the diffuser is arranged on bionical spiral case upper end.
Feature of the present invention based on impeller outlet velocity magnitude and direction, flows to reduce impeller outlet and snail tongue is rushed
Hit, carried out innovative design to existing straight snail tongue, abandoning tradition rectilinear wire snail tongue structure design, along snail tongue wire direction,
Snail tongue depth changes, and snail tongue profile rounding radii simultaneously changes along snail tongue wire direction, and the design is real by calculating
Test and show, reached good noise reduction, and be conducive to the lifting of aerodynamic performance, reduce use cost.
Beneficial effect
It is of the invention compared with traditional snail tongue method for designing, varying depth noise reduction spiral tougue simple structure, although more traditional snail
Tongue structure, slightly has complexity in manufacturing process, but obvious in the whole machine noise reduction and performance boost effect of blower fan.Varying depth noise reduction
Snail tongue is favourable for reducing complete blower noise, raising fan efficiency.Comprehensive whole machine, can apply to high-end household appliances
Exhaust system, the comfort level for effectively improving product, lower because of the cost attached by other means noise reductions.
Brief description of the drawings
Fig. 1 is varying depth noise reduction spiral tougue space structure schematic diagram of the present invention.
Fig. 2 is multi-wing centrifugal fan space structure schematic diagram of the present invention.
Fig. 3 is multi-wing centrifugal fan front view of the present invention.
Fig. 4 is partial enlarged drawing at A in Fig. 3.
Fig. 5 is the structural representation that varying depth noise reduction spiral tougue is applied to blower fan.
Specific embodiment
With reference to specific embodiment, the present invention is expanded on further.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limitation the scope of the present invention.In addition, it is to be understood that after the content for having read instruction of the present invention, people in the art
Member can make various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.
Embodiment 1
It is as depicted in figs. 1 and 2 varying depth noise reduction spiral tougue space structure view, it is shown that sky of the body 1 in blower interior
Between structure.DD sections of varying depth noise reduction spiral tougue corresponds to snail tongue section 1-2 windward, 1-3, BC section of correspondence snail tongue of CD sections of correspondence snail tongue interlude
Secondary rear 1-4, AB sections of correspondence snail tongue rear 1-5, in impeller outlet direction of flow, near the 1-5 snail tongue rears of impeller outlet, with
The increase of snail tongue depth, snail tongue profile radius are started from scratch increase, it is this enter the less snail tongue radial design of impeller outlet, drop
Low impeller outlet flows the impact to snail tongue, and the discrete noise for reducing blower fan is favourable.With the increase of snail tongue depth, met in snail tongue
Wind section 1-2, snail tongue profile radius are maximum, and the part is also farthest from impeller outlet position, has effectively buffered impeller outlet high speed gas
Flow the impact to snail tongue.
The rounding radii excursion of wherein snail tongue section 1-2 windward is 6-4mm, the rounding of snail tongue interlude 1-2 half
Footpath excursion is 5-3mm, and the rounding radii excursion of snail tongue time rear 1-3 is 4-2mm, snail tongue rear 1-4 roundings
Radius change scope is 3-0mm.
As shown in Figure 3 and Figure 4 be a kind of varying depth noise reduction spiral tougue of the invention and multi-wing centrifugal fan an implementation
Location view of the example in blower fan structure.The varying depth noise reduction spiral tougue of the present embodiment includes varying depth snail tongue 1, diffuser 2, impeller
3rd, spiral case 4, snail tongue section 1-1, snail tongue section 1-2, snail tongue interlude 1-3, snail tongue time rear 1-4 and snail tongue rear 1-5 windward,
In whole blower fan structure, varying depth noise reduction spiral tougue is in the infall of spiral case curved surface and diffuser curved surface, i.e. intersection position.From
Seen outside blower fan, from the beginning of diffuser 2 to snail tongue section 1-1 positions, snail tongue section rounding is partly for varying depth noise reduction spiral tougue
Footpath gradually increases, and maximum is reached at the 1-1 positions of snail tongue section, and symmetrical as symmetrical plane with the whole machine plane of symmetry.Install
When, it may be considered that varying depth snail tongue 1 is linked up by welding manner and diffuser 2 and spiral case 4.
Fig. 5 is the implementation illustration that varying depth noise reduction spiral tougue is applied to blower fan, can see varying depth from the visual angle of whole machine
Noise reduction spiral tougue and conventional axial straight line snail tongue difference.
The present embodiment normal hour, for antecurvature multi-wing centrifugal fan, when high velocity air from impeller outlet in coriolis force
Projected along impeller direction of rotation under effect, initial high velocity air impacts from the shallower snail tongue of zero depth for becoming larger first
Position, i.e. AB section 1-5 and BC section of corresponding snail tongue of corresponding snail tongue rear time rear 1-4, because snail tongue radius is smaller, impact
It is smaller.With the intensification of snail tongue depth, although snail tongue radius increased, but high velocity air apart from snail tongue distance also earlier above
Two sections have increase, therefore, the impulsive force of gas shock snail tongue section windward also reduces.So, work a circulation, sub-fraction gas
Stream is continued cycling through into spiral case, and most gas enters diffuser, from fan outlet discharge.
In above-described embodiment, the material of varying depth noise reduction spiral tougue is manufactured using with spiral case homogenous metal, or uses rubber
Making mold is carried out to form.Installation can be attached by welding using metal snail tongue, using rubber mass snail tongue, can be used
Installation by adhering, these structures and material, the snail tongue to the structure are respectively provided with the effect of noise reduction, reduce aerodynamic noise.
The above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, for example, the wheel of varying depth noise reduction spiral tougue
Exterior feature can also be designed using bionical kingfisher head contour, according to structure and processing technology the need for, appropriate change can be made.
Claims (7)
1. a kind of varying depth noise reduction spiral tougue, including body (1), it is characterised in that：The body (1) is spiral case curved surface and diffuser
The intersection that contour surface is crossed to form, the intersection is the symmetrical curve formed on spiral case (4), the symmetrical curve
Snail tongue section (1-2), snail tongue interlude (1-3), snail tongue time rear (1-4) and snail tongue rear (1-5) windward are sequentially consisted of,
The snail tongue windward section (1-2), snail tongue interlude (1-3), snail tongue time rear (1-4) and snail tongue rear (1-5) be respectively along
Intersection becomes radius rounding corner structure, forms the elementary contour face of snail tongue.
2. a kind of varying depth noise reduction spiral tougue according to claim 1, it is characterised in that：The intersection can be not rounded wheel
Wide structure or kingfisher head contour biomimetic features.
3. a kind of varying depth noise reduction spiral tougue according to claim 1, it is characterised in that：Snail tongue section (1-2) windward
Rounding radii excursion is 6-4mm.
4. a kind of varying depth noise reduction spiral tougue according to claim 1, it is characterised in that：The snail tongue interlude (1-3)
Rounding radii excursion is 5-3mm.
5. a kind of varying depth noise reduction spiral tougue according to claim 1, it is characterised in that：The snail tongue time rear (1-4)
Rounding radii excursion is 4-2mm.
6. a kind of varying depth noise reduction spiral tougue according to claim 1, it is characterised in that：Snail tongue rear (1-5) rounding
Angular radius excursion is 3-0mm.
7. a kind of usage right requires the multi-wing centrifugal fan of the varying depth noise reduction spiral tougue described in 1, including body (1), diffuser
(2), impeller (3) and spiral case (4), it is characterised in that：The body (1) is described on the snail tongue support zone of spiral case (4)
Impeller (2) is arranged on bionical spiral case (1) by support, and the diffuser (3) is installed in bionical spiral case (1) upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611162289.2A CN106855062A (en) | 2016-12-15 | 2016-12-15 | A kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611162289.2A CN106855062A (en) | 2016-12-15 | 2016-12-15 | A kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106855062A true CN106855062A (en) | 2017-06-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611162289.2A Pending CN106855062A (en) | 2016-12-15 | 2016-12-15 | A kind of varying depth noise reduction spiral tougue and multi-wing centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106855062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058170A (en) * | 2018-10-24 | 2018-12-21 | 奥克斯空调股份有限公司 | Blower and air conditioner |
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|---|---|---|---|---|
| EP1857683A2 (en) * | 2006-05-16 | 2007-11-21 | Ln 2 - S.R.L. | Centrifugal fan, particularly for extractor hoods and fume extractors |
| CN102425573A (en) * | 2011-12-14 | 2012-04-25 | 中国舰船研究设计中心 | Low-noise forward multi-wing centrifugal blower |
| CN102518603A (en) * | 2011-12-19 | 2012-06-27 | 海尔集团公司 | Fan of range hood and range hood provided with same |
| CN202789739U (en) * | 2012-08-02 | 2013-03-13 | 中山华帝燃具股份有限公司 | Fan of range hood |
| CN103512064A (en) * | 2012-06-21 | 2014-01-15 | 博西华电器（江苏）有限公司 | Kitchen ventilator, spiral case and volute tongue thereof |
| CN104411981A (en) * | 2012-07-13 | 2015-03-11 | 德尔福汽车系统卢森堡有限公司 | Ventilation device equipped with a casing shaped as a volute housing |
-
2016
- 2016-12-15 CN CN201611162289.2A patent/CN106855062A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1857683A2 (en) * | 2006-05-16 | 2007-11-21 | Ln 2 - S.R.L. | Centrifugal fan, particularly for extractor hoods and fume extractors |
| CN102425573A (en) * | 2011-12-14 | 2012-04-25 | 中国舰船研究设计中心 | Low-noise forward multi-wing centrifugal blower |
| CN102518603A (en) * | 2011-12-19 | 2012-06-27 | 海尔集团公司 | Fan of range hood and range hood provided with same |
| CN103512064A (en) * | 2012-06-21 | 2014-01-15 | 博西华电器（江苏）有限公司 | Kitchen ventilator, spiral case and volute tongue thereof |
| CN104411981A (en) * | 2012-07-13 | 2015-03-11 | 德尔福汽车系统卢森堡有限公司 | Ventilation device equipped with a casing shaped as a volute housing |
| CN202789739U (en) * | 2012-08-02 | 2013-03-13 | 中山华帝燃具股份有限公司 | Fan of range hood |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058170A (en) * | 2018-10-24 | 2018-12-21 | 奥克斯空调股份有限公司 | Blower and air conditioner |
| CN109058170B (en) * | 2018-10-24 | 2024-05-10 | 奥克斯空调股份有限公司 | Fan and air conditioner |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170616 |
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| RJ01 | Rejection of invention patent application after publication |